Driver for levitation coils of a magnetic bearing

Details Driver for levitation coils of a magnetic bearing Driver for levitation coils of a magnetic bearing

1995-05-03

1997-07-22

McAndrews, Roland

Pumps

Motor driven

Electric or magnetic motor

41742312, 310 905, H02K 709

Patent

active

056498144

ABSTRACT:
An apparatus for driving levitation coils of a magnetic bearing provided with a DC power source and a motor drive device powered by the power source. A DC motor is driven by the motor drive and the output from the motor is linked to a switching amplifier. The output from the amplifier is linked to the levitation coils of the magnetic bearing. A feedback control is provided from the magnetic bearing to the amplifier to position a rotor associated with the levitation coils in response to the amplifier output. The DC power source also directly powers the switching amplifier.

REFERENCES:
patent: 5262692 (1993-11-01), Williams et al.
patent: 5264982 (1993-11-01), Cox et al.
patent: 5355040 (1994-10-01), New
patent: 5522694 (1996-06-01), Bernhardt et al.
Patent Abstracts of Japan, vol. 10, No. 37 (M453) 14 Feb. 1986 & JP A -60 190697 Seiko Seiki KK, 28 Sep. 1985.

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